Offer a free and a paid version, remember game state

Hi!

Does anyone know how to approach the following problem:

Say I have a free version with a limited amount of levels available in Google Store. I also want to sell a full version for one dollar. The two games are separate entities. Is there a way to make the full version retrieve the game state from the free version, so that the client doesn't have to replay old levels?

I tried searching the forums with keywords like "sell", "free", "unlock", "remember game state" but didn't really find any resources. Is there any tutorials on the subject I could check?

ANY help is highly appreaciated!

I think you need to use :

https://www.scirra.com/manual/120/webstorage

i think the best way to go about this would be to offer one game that is locked be default then use IAP to unlock the full version

I think you need to use :

https://www.scirra.com/manual/120/webstorage

I'm pretty sure that won't work. WebStorage runs per domain, so the premium version would not be able to access the demo versions webstorage.

I have seen somewhere that you can download files from C2 to your hard drive.You could do something with save games. Allowing the player to download a save game file and load it in the full game from disk.

I can imagine that there might be problems with object UID'n. But I don't really understand how the save system works.